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Sex and gender differences in autism exist regarding prevalence, presentation, and diagnosis.. Men and boys are more frequently diagnosed with autism than women and girls. It is debated whether this is due to a sex difference in rates of autism spectrum disorders (ASD) or whether females are underdiagnosed.
The epidemiology of autism is the study of the incidence and distribution of autism spectrum disorders (ASD). A 2022 systematic review of global prevalence of autism spectrum disorders found a median prevalence of 1% in children in studies published from 2012 to 2021, with a trend of increasing prevalence over time.
Autism cases spiked 175% among U.S. residents from 2011 to 2022. The rates climbed at a faster rate among young adults. Autism is spiking in young adults, study finds
A 2021 study suggested that viral infections in childhood could also be a risk factor for autism in boys, while other studies have hinted at associations between autism and vitamin D deficiencies ...
A 2003 review of epidemiological studies of children found autism rates ranging from 0.03 to 4.84 per 1,000, with the ratio of autism to Asperger syndrome ranging from 1.5:1 to 16:1; [142] combining the geometric mean ratio of 5:1 with a conservative prevalence estimate for autism of 1.3 per 1,000 suggests indirectly that the prevalence of AS ...
Autism spectrum disorder [a] (ASD), or simply autism, is a neurodevelopmental disorder "characterized by persistent deficits in social communication and social interaction across multiple contexts" and "restricted, repetitive patterns of behavior, interests, or activities". [11] Sensory abnormalities are also included in the diagnostic manuals ...
Autism is diagnosed in about 1 in 36 children, and in an estimated 2.2% of adults nationwide, according to the Centers for Disease Control and Prevention, which defines autism as a ...
Autism spectrum disorder (ASD) or simply autism is a neurodevelopmental disorder that begins in early childhood, ... 17.1% and 4.2% for boys and at 22.9%, ...